PDF Report Generation on Letterhead

I'm looking to enhance my lab management software by generating PDF reports on a specified letterhead. The frontend is built on the next js and backend is on the node js

Requirements:
- Patient details and test results should be included in the PDF report.
- The report should be formatted using an existing letterhead template.
- The letterhead template is provided as an image file (JPEG/PNG).

Ideal Skills and Experience:
- Proficiency in PDF generation and manipulation.
- Experience with integrating image-based letterheads into reports.
- Familiarity with medical lab reporting standards.

Please provide samples of similar work done.